/*!
 * tablesorter pager plugin
 * updated 8/1/2014 (v2.17.6)
 */
/*jshint browser:true, jquery:true, unused:false */
;(function($) {
  "use strict";
  /*jshint supernew:true */
  var ts = $.tablesorter;

  $.extend({ tablesorterPager: new function() {

    this.defaults = {
      // target the pager markup
      container: null,

      // use this format: "http://mydatabase.com?page={page}&size={size}&{sortList:col}&{filterList:fcol}"
      // where {page} is replaced by the page number, {size} is replaced by the number of records to show,
      // {sortList:col} adds the sortList to the url into a "col" array, and {filterList:fcol} adds
      // the filterList to the url into an "fcol" array.
      // So a sortList = [[2,0],[3,0]] becomes "&col[2]=0&col[3]=0" in the url
      // and a filterList = [[2,Blue],[3,13]] becomes "&fcol[2]=Blue&fcol[3]=13" in the url
      ajaxUrl: null,

      // modify the url after all processing has been applied
      customAjaxUrl: function(table, url) { return url; },

      // modify the $.ajax object to allow complete control over your ajax requests
      ajaxObject: {
        dataType: 'json'
      },

      // set this to false if you want to block ajax loading on init
      processAjaxOnInit: true,

      // process ajax so that the following information is returned:
      // [ total_rows (number), rows (array of arrays), headers (array; optional) ]
      // example:
      // [
      //   100,  // total rows
      //   [
      //     [ "row1cell1", "row1cell2", ... "row1cellN" ],
      //     [ "row2cell1", "row2cell2", ... "row2cellN" ],
      //     ...
      //     [ "rowNcell1", "rowNcell2", ... "rowNcellN" ]
      //   ],
      //   [ "header1", "header2", ... "headerN" ] // optional
      // ]
      ajaxProcessing: function(ajax){ return [ 0, [], null ]; },

      // output default: '{page}/{totalPages}'
      // possible variables: {page}, {totalPages}, {filteredPages}, {startRow}, {endRow}, {filteredRows} and {totalRows}
      output: '{startRow} to {endRow} of {totalRows} rows', // '{page}/{totalPages}'

      // apply disabled classname to the pager arrows when the rows at either extreme is visible
      updateArrows: true,

      // starting page of the pager (zero based index)
      page: 0,

    // reset pager after filtering; set to desired page #
    // set to false to not change page at filter start
      pageReset: 0,

      // Number of visible rows
      size: 10,

      // Save pager page & size if the storage script is loaded (requires $.tablesorter.storage in jquery.tablesorter.widgets.js)
      savePages: true,

      // defines custom storage key
      storageKey: 'tablesorter-pager',

      // if true, the table will remain the same height no matter how many records are displayed. The space is made up by an empty
      // table row set to a height to compensate; default is false
      fixedHeight: false,

      // count child rows towards the set page size? (set true if it is a visible table row within the pager)
      // if true, child row(s) may not appear to be attached to its parent row, may be split across pages or
      // may distort the table if rowspan or cellspans are included.
      countChildRows: false,

      // remove rows from the table to speed up the sort of large tables.
      // setting this to false, only hides the non-visible rows; needed if you plan to add/remove rows with the pager enabled.
      removeRows: false, // removing rows in larger tables speeds up the sort

      // css class names of pager arrows
      cssFirst: '.first', // go to first page arrow
      cssPrev: '.prev', // previous page arrow
      cssNext: '.next', // next page arrow
      cssLast: '.last', // go to last page arrow
      cssGoto: '.gotoPage', // go to page selector - select dropdown that sets the current page
      cssPageDisplay: '.pagedisplay', // location of where the "output" is displayed
      cssPageSize: '.pagesize', // page size selector - select dropdown that sets the "size" option
      cssErrorRow: 'tablesorter-errorRow', // error information row

      // class added to arrows when at the extremes (i.e. prev/first arrows are "disabled" when on the first page)
      cssDisabled: 'disabled', // Note there is no period "." in front of this class name

      // stuff not set by the user
      totalRows: 0,
      totalPages: 0,
      filteredRows: 0,
      filteredPages: 0,
      ajaxCounter: 0,
      currentFilters: [],
      startRow: 0,
      endRow: 0,
      $size: null,
      last: {}

    };

    var $this = this,

    // hide arrows at extremes
    pagerArrows = function(p, disable) {
      var a = 'addClass',
      r = 'removeClass',
      d = p.cssDisabled,
      dis = !!disable,
      first = ( dis || p.page === 0 ),
      tp = Math.min( p.totalPages, p.filteredPages ),
      last = ( dis || (p.page === tp - 1) || tp === 0 );
      if ( p.updateArrows ) {
        p.$container.find(p.cssFirst + ',' + p.cssPrev)[ first ? a : r ](d).attr('aria-disabled', first);
        p.$container.find(p.cssNext + ',' + p.cssLast)[ last ? a : r ](d).attr('aria-disabled', last);
      }
    },

    updatePageDisplay = function(table, p, completed) {
      var i, pg, s, $out, regex,
        c = table.config,
        f = c.$table.hasClass('hasFilters'),
        t = [],
        sz = p.size || 10; // don't allow dividing by zero
      t = [ (c.widgetOptions && c.widgetOptions.filter_filteredRow || 'filtered'), c.selectorRemove.replace(/^(\w+\.)/g,'') ];
      if (p.countChildRows) { t.push(c.cssChildRow); }
      regex = new RegExp( '(' + t.join('|') + ')' );
      if (f && !p.ajaxUrl) {
        if ($.isEmptyObject(c.cache)) {
          // delayInit: true so nothing is in the cache
          p.filteredRows = p.totalRows = c.$tbodies.eq(0).children('tr').not( p.countChildRows ? '' : '.' + c.cssChildRow ).length;
        } else {
          p.filteredRows = 0;
          $.each(c.cache[0].normalized, function(i, el) {
            p.filteredRows += p.regexRows.test(el[c.columns].$row[0].className) ? 0 : 1;
          });
        }
      } else if (!f) {
        p.filteredRows = p.totalRows;
      }
      p.totalPages = Math.ceil( p.totalRows / sz ); // needed for "pageSize" method
      c.totalRows = p.totalRows;
      c.filteredRows = p.filteredRows;
      p.filteredPages = Math.ceil( p.filteredRows / sz ) || 0;
      if ( Math.min( p.totalPages, p.filteredPages ) >= 0 ) {
        t = (p.size * p.page > p.filteredRows);
        p.startRow = (t) ? 1 : (p.filteredRows === 0 ? 0 : p.size * p.page + 1);
        p.page = (t) ? 0 : p.page;
        p.endRow = Math.min( p.filteredRows, p.totalRows, p.size * ( p.page + 1 ) );
        $out = p.$container.find(p.cssPageDisplay);
        // form the output string (can now get a new output string from the server)
        s = ( p.ajaxData && p.ajaxData.output ? p.ajaxData.output || p.output : p.output )
          // {page} = one-based index; {page+#} = zero based index +/- value
          .replace(/\{page([\-+]\d+)?\}/gi, function(m,n){
            return p.totalPages ? p.page + (n ? parseInt(n, 10) : 1) : 0;
          })
          // {totalPages}, {extra}, {extra:0} (array) or {extra : key} (object)
          .replace(/\{\w+(\s*:\s*\w+)?\}/gi, function(m){
            var len, indx,
              str = m.replace(/[{}\s]/g,''),
              extra = str.split(':'),
              data = p.ajaxData,
              // return zero for default page/row numbers
              deflt = /(rows?|pages?)$/i.test(str) ? 0 : '';
            if (/(startRow|page)/.test(extra[0]) && extra[1] === 'input') {
              len = ('' + (extra[0] === 'page' ? p.totalPages : p.totalRows)).length;
              indx = extra[0] === 'page' ? p.page + 1 : p.startRow;
              return '<input type="text" class="ts-' + extra[0] + '" style="max-width:' + len + 'em" value="' + indx + '"/>';
            }
            return extra.length > 1 && data && data[extra[0]] ? data[extra[0]][extra[1]] : p[str] || (data ? data[str] : deflt) || deflt;
          });
        if ($out.length) {
          $out[ ($out[0].tagName === 'INPUT') ? 'val' : 'html' ](s);
          if ( p.$goto.length ) {
            t = '';
            pg = Math.min( p.totalPages, p.filteredPages );
            for ( i = 1; i <= pg; i++ ) {
              t += '<option>' + i + '</option>';
            }
            p.$goto.html(t).val( p.page + 1 );
          }
          // rebind startRow/page inputs
          $out.find('.ts-startRow, .ts-page').unbind('change').bind('change', function(){
            var v = $(this).val(),
              pg = $(this).hasClass('ts-startRow') ? Math.floor( v/p.size ) + 1 : v;
            c.$table.trigger('pageSet.pager', [ pg ]);
          });
        }
      }
      pagerArrows(p);
      if (p.initialized && completed !== false) {
        c.$table.trigger('pagerComplete', p);
        // save pager info to storage
        if (p.savePages && ts.storage) {
          ts.storage(table, p.storageKey, {
            page : p.page,
            size : p.size
          });
        }
      }
    },

    fixHeight = function(table, p) {
      var d, h,
        c = table.config,
        $b = c.$tbodies.eq(0);
      if (p.fixedHeight) {
        $b.find('tr.pagerSavedHeightSpacer').remove();
        h = $.data(table, 'pagerSavedHeight');
        if (h) {
          d = h - $b.height();
          if ( d > 5 && $.data(table, 'pagerLastSize') === p.size && $b.children('tr:visible').length < p.size ) {
            $b.append('<tr class="pagerSavedHeightSpacer ' + c.selectorRemove.replace(/^(\w+\.)/g,'') + '" style="height:' + d + 'px;"></tr>');
          }
        }
      }
    },

    changeHeight = function(table, p) {
      var $b = table.config.$tbodies.eq(0);
      $b.find('tr.pagerSavedHeightSpacer').remove();
      $.data(table, 'pagerSavedHeight', $b.height());
      fixHeight(table, p);
      $.data(table, 'pagerLastSize', p.size);
    },

    hideRows = function(table, p){
      if (!p.ajaxUrl) {
        var i,
        lastIndex = 0,
        c = table.config,
        rows = c.$tbodies.eq(0).children('tr'),
        l = rows.length,
        s = ( p.page * p.size ),
        e =  s + p.size,
        f = c.widgetOptions && c.widgetOptions.filter_filteredRow || 'filtered',
        j = 0; // size counter
        for ( i = 0; i < l; i++ ){
          if ( !rows[i].className.match(f) ) {
            if (j === s && rows[i].className.match(c.cssChildRow)) {
              // hide child rows @ start of pager (if already visible)
              rows[i].style.display = 'none';
            } else {
              rows[i].style.display = ( j >= s && j < e ) ? '' : 'none';
              // don't count child rows
              j += rows[i].className.match(c.cssChildRow + '|' + c.selectorRemove.replace(/^(\w+\.)/g,'')) && !p.countChildRows ? 0 : 1;
              if ( j === e && rows[i].style.display !== 'none' && rows[i].className.match(ts.css.cssHasChild) ) {
                lastIndex = i;
              }
            }
          }
        }
        // add any attached child rows to last row of pager. Fixes part of issue #396
        if ( lastIndex > 0 && rows[lastIndex].className.match(ts.css.cssHasChild) ) {
          while ( ++lastIndex < l && rows[lastIndex].className.match(c.cssChildRow) ) {
            rows[lastIndex].style.display = '';
          }
        }
      }
    },

    hideRowsSetup = function(table, p){
      p.size = parseInt( p.$size.val(), 10 ) || p.size;
      $.data(table, 'pagerLastSize', p.size);
      pagerArrows(p);
      if ( !p.removeRows ) {
        hideRows(table, p);
        $(table).bind('sortEnd.pager filterEnd.pager', function(){
          hideRows(table, p);
        });
      }
    },

    renderAjax = function(data, table, p, xhr, exception){
      // process data
      if ( typeof(p.ajaxProcessing) === "function" ) {
        // ajaxProcessing result: [ total, rows, headers ]
        var i, j, hsh, $f, $sh, t, th, d, l, rr_count,
          c = table.config,
          $t = c.$table,
          tds = '',
          result = p.ajaxProcessing(data, table, xhr) || [ 0, [] ],
          hl = $t.find('thead th').length;

        // Clean up any previous error.
        ts.showError(table);

        if ( exception ) {
          if (c.debug) {
            ts.log('Ajax Error', xhr, exception);
          }
          ts.showError(table,
            xhr.status === 0 ? 'Not connected, verify Network' :
            xhr.status === 404 ? 'Requested page not found [404]' :
            xhr.status === 500 ? 'Internal Server Error [500]' :
            exception === 'parsererror' ? 'Requested JSON parse failed' :
            exception === 'timeout' ? 'Time out error' :
            exception === 'abort' ? 'Ajax Request aborted' :
            'Uncaught error: ' + xhr.statusText + ' [' + xhr.status + ']' );
          c.$tbodies.eq(0).children('tr').detach();
          p.totalRows = 0;
        } else {
          // process ajax object
          if (!$.isArray(result)) {
            p.ajaxData = result;
            c.totalRows = p.totalRows = result.total;
            c.filteredRows = p.filteredRows = typeof result.filteredRows !== 'undefined' ? result.filteredRows : result.total;
            th = result.headers;
            d = result.rows;
          } else {
            // allow [ total, rows, headers ]  or [ rows, total, headers ]
            t = isNaN(result[0]) && !isNaN(result[1]);
            // ensure a zero returned row count doesn't fail the logical ||
            rr_count = result[t ? 1 : 0];
            p.totalRows = isNaN(rr_count) ? p.totalRows || 0 : rr_count;
            // can't set filtered rows when returning an array
            c.totalRows = c.filteredRows = p.filteredRows = p.totalRows;
            d = p.totalRows === 0 ? [""] : result[t ? 0 : 1] || []; // row data
            th = result[2]; // headers
          }
          l = d && d.length;
          if (d instanceof jQuery) {
            if (p.processAjaxOnInit) {
              // append jQuery object
              c.$tbodies.eq(0).children('tr').detach();
              c.$tbodies.eq(0).append(d);
            }
          } else if (l) {
            // build table from array
            for ( i = 0; i < l; i++ ) {
              tds += '<tr>';
              for ( j = 0; j < d[i].length; j++ ) {
                // build tbody cells; watch for data containing HTML markup - see #434
                tds += /^\s*<td/.test(d[i][j]) ? $.trim(d[i][j]) : '<td>' + d[i][j] + '</td>';
              }
              tds += '</tr>';
            }
            // add rows to first tbody
            if (p.processAjaxOnInit) {
              c.$tbodies.eq(0).html( tds );
            }
          }
          p.processAjaxOnInit = true;
          // only add new header text if the length matches
          if ( th && th.length === hl ) {
            hsh = $t.hasClass('hasStickyHeaders');
            $sh = hsh ? c.widgetOptions.$sticky.children('thead:first').children('tr').children() : '';
            $f = $t.find('tfoot tr:first').children();
            // don't change td headers (may contain pager)
            c.$headers.filter('th').each(function(j){
              var $t = $(this), icn;
              // add new test within the first span it finds, or just in the header
              if ( $t.find('.' + ts.css.icon).length ) {
                icn = $t.find('.' + ts.css.icon).clone(true);
                $t.find('.tablesorter-header-inner').html( th[j] ).append(icn);
                if ( hsh && $sh.length ) {
                  icn = $sh.eq(j).find('.' + ts.css.icon).clone(true);
                  $sh.eq(j).find('.tablesorter-header-inner').html( th[j] ).append(icn);
                }
              } else {
                $t.find('.tablesorter-header-inner').html( th[j] );
                if (hsh && $sh.length) {
                  $sh.eq(j).find('.tablesorter-header-inner').html( th[j] );
                }
              }
              $f.eq(j).html( th[j] );
            });
          }
        }
        if (c.showProcessing) {
          ts.isProcessing(table); // remove loading icon
        }
        // make sure last pager settings are saved, prevents multiple server side calls with
        // the same parameters
        p.totalPages = Math.ceil( p.totalRows / ( p.size || 10 ) );
        p.last.totalRows = p.totalRows;
        p.last.currentFilters = p.currentFilters;
        p.last.sortList = (c.sortList || []).join(',');
        updatePageDisplay(table, p);
        fixHeight(table, p);
        $t.trigger('updateCache', [function(){
          if (p.initialized) {
            // apply widgets after table has rendered & after a delay to prevent
            // multiple applyWidget blocking code from blocking this trigger
            setTimeout(function(){
              $t
                .trigger('applyWidgets')
                .trigger('pagerChange', p);
              }, 0);
          }
        }]);

      }
      if (!p.initialized) {
        p.initialized = true;
        $(table)
          .trigger('applyWidgets')
          .trigger('pagerInitialized', p);
      }
    },

    getAjax = function(table, p){
      var url = getAjaxUrl(table, p),
      $doc = $(document),
      counter,
      c = table.config;
      if ( url !== '' ) {
        if (c.showProcessing) {
          ts.isProcessing(table, true); // show loading icon
        }
        $doc.bind('ajaxError.pager', function(e, xhr, settings, exception) {
          renderAjax(null, table, p, xhr, exception);
          $doc.unbind('ajaxError.pager');
        });

        counter = ++p.ajaxCounter;

        p.ajaxObject.url = url; // from the ajaxUrl option and modified by customAjaxUrl
        p.ajaxObject.success = function(data, status, jqxhr) {
          // Refuse to process old ajax commands that were overwritten by new ones - see #443
          if (counter < p.ajaxCounter){
            return;
          }
          renderAjax(data, table, p, jqxhr);
          $doc.unbind('ajaxError.pager');
          if (typeof p.oldAjaxSuccess === 'function') {
            p.oldAjaxSuccess(data);
          }
        };
        if (c.debug) {
          ts.log('ajax initialized', p.ajaxObject);
        }
        $.ajax(p.ajaxObject);
      }
    },

    getAjaxUrl = function(table, p) {
      var c = table.config,
        url = (p.ajaxUrl) ? p.ajaxUrl
        // allow using "{page+1}" in the url string to switch to a non-zero based index
        .replace(/\{page([\-+]\d+)?\}/, function(s,n){ return p.page + (n ? parseInt(n, 10) : 0); })
        .replace(/\{size\}/g, p.size) : '',
      sl = c.sortList,
      fl = p.currentFilters || $(table).data('lastSearch') || [],
      sortCol = url.match(/\{\s*sort(?:List)?\s*:\s*(\w*)\s*\}/),
      filterCol = url.match(/\{\s*filter(?:List)?\s*:\s*(\w*)\s*\}/),
      arry = [];
      if (sortCol) {
        sortCol = sortCol[1];
        $.each(sl, function(i,v){
          arry.push(sortCol + '[' + v[0] + ']=' + v[1]);
        });
        // if the arry is empty, just add the col parameter... "&{sortList:col}" becomes "&col"
        url = url.replace(/\{\s*sort(?:List)?\s*:\s*(\w*)\s*\}/g, arry.length ? arry.join('&') : sortCol );
        arry = [];
      }
      if (filterCol) {
        filterCol = filterCol[1];
        $.each(fl, function(i,v){
          if (v) {
            arry.push(filterCol + '[' + i + ']=' + encodeURIComponent(v));
          }
        });
        // if the arry is empty, just add the fcol parameter... "&{filterList:fcol}" becomes "&fcol"
        url = url.replace(/\{\s*filter(?:List)?\s*:\s*(\w*)\s*\}/g, arry.length ? arry.join('&') : filterCol );
        p.currentFilters = fl;
      }
      if ( typeof(p.customAjaxUrl) === "function" ) {
        url = p.customAjaxUrl(table, url);
      }
      if (c.debug) {
        ts.log('Pager ajax url: ' + url);
      }
      return url;
    },

    renderTable = function(table, rows, p) {
      var $tb, index, count, added,
        $t = $(table),
        c = table.config,
        f = c.$table.hasClass('hasFilters'),
        l = rows && rows.length || 0, // rows may be undefined
        s = ( p.page * p.size ),
        e = p.size;
      if ( l < 1 ) {
        if (c.debug) {
          ts.log('Pager: no rows for pager to render');
        }
        // empty table, abort!
        return;
      }
      if ( p.page >= p.totalPages ) {
        // lets not render the table more than once
        moveToLastPage(table, p);
      }
      p.isDisabled = false; // needed because sorting will change the page and re-enable the pager
      if (p.initialized) { $t.trigger('pagerChange', p); }

      if ( !p.removeRows ) {
        hideRows(table, p);
      } else {
        ts.clearTableBody(table);
        $tb = ts.processTbody(table, c.$tbodies.eq(0), true);
        // not filtered, start from the calculated starting point (s)
        // if filtered, start from zero
        index = f ? 0 : s;
        count = f ? 0 : s;
        added = 0;
        while (added < e && index < rows.length) {
          if (!f || !/filtered/.test(rows[index][0].className)){
            count++;
            if (count > s && added <= e) {
              added++;
              $tb.append(rows[index]);
            }
          }
          index++;
        }
        ts.processTbody(table, $tb, false);
      }
      updatePageDisplay(table, p);
      if ( !p.isDisabled ) { fixHeight(table, p); }
      $t.trigger('applyWidgets');
      if (table.isUpdating) {
        $t.trigger("updateComplete", table);
      }
    },

    showAllRows = function(table, p){
      if ( p.ajax ) {
        pagerArrows(p, true);
      } else {
        p.isDisabled = true;
        $.data(table, 'pagerLastPage', p.page);
        $.data(table, 'pagerLastSize', p.size);
        p.page = 0;
        p.size = p.totalRows;
        p.totalPages = 1;
        $(table)
          .addClass('pagerDisabled')
          .removeAttr('aria-describedby')
          .find('tr.pagerSavedHeightSpacer').remove();
        renderTable(table, table.config.rowsCopy, p);
        if (table.config.debug) {
          ts.log('pager disabled');
        }
      }
      // disable size selector
      p.$size.add(p.$goto).add(p.$container.find('.ts-startRow, .ts-page')).each(function(){
        $(this).attr('aria-disabled', 'true').addClass(p.cssDisabled)[0].disabled = true;
      });
    },

    // updateCache if delayInit: true
    updateCache = function(table) {
      var c = table.config,
        p = c.pager;
      c.$table.trigger('updateCache', [ function(){
        var i,
          rows = [],
          n = table.config.cache[0].normalized;
        p.totalRows = n.length;
        for (i = 0; i < p.totalRows; i++) {
          rows.push(n[i][c.columns].$row);
        }
        c.rowsCopy = rows;
        moveToPage(table, p, true);
      } ]);
    },

    moveToPage = function(table, p, pageMoved) {
      if ( p.isDisabled ) { return; }
      var c = table.config,
        $t = $(table),
        l = p.last,
        pg = Math.min( p.totalPages, p.filteredPages );
      if ( pageMoved !== false && p.initialized && $.isEmptyObject(table.config.cache)) {
        return updateCache(table);
      }
      if ( p.page < 0 ) { p.page = 0; }
      if ( p.page > ( pg - 1 ) && pg !== 0 ) { p.page = pg - 1; }
      // fixes issue where one currentFilter is [] and the other is ['','',''],
      // making the next if comparison think the filters are different (joined by commas). Fixes #202.
      l.currentFilters = (l.currentFilters || []).join('') === '' ? [] : l.currentFilters;
      p.currentFilters = (p.currentFilters || []).join('') === '' ? [] : p.currentFilters;
      // don't allow rendering multiple times on the same page/size/totalRows/filters/sorts
      if ( l.page === p.page && l.size === p.size && l.totalRows === p.totalRows &&
        (l.currentFilters || []).join(',') === (p.currentFilters || []).join(',') &&
        l.sortList === (c.sortList || []).join(',') ) { return; }
      if (c.debug) {
        ts.log('Pager changing to page ' + p.page);
      }
      p.last = {
        page : p.page,
        size : p.size,
        // fixes #408; modify sortList otherwise it auto-updates
        sortList : (c.sortList || []).join(','),
        totalRows : p.totalRows,
        currentFilters : p.currentFilters || []
      };
      if (p.ajax) {
        getAjax(table, p);
      } else if (!p.ajax) {
        renderTable(table, c.rowsCopy, p);
      }
      $.data(table, 'pagerLastPage', p.page);
      if (p.initialized && pageMoved !== false) {
        $t
          .trigger('pageMoved', p)
          .trigger('applyWidgets');
        if (table.isUpdating) {
          $t.trigger('updateComplete');
        }
      }
    },

    setPageSize = function(table, size, p) {
      p.size = size || p.size || 10;
      p.$size.val(p.size);
      $.data(table, 'pagerLastPage', p.page);
      $.data(table, 'pagerLastSize', p.size);
      p.totalPages = Math.ceil( p.totalRows / p.size );
      p.filteredPages = Math.ceil( p.filteredRows / p.size );
      moveToPage(table, p);
    },

    moveToFirstPage = function(table, p) {
      p.page = 0;
      moveToPage(table, p);
    },

    moveToLastPage = function(table, p) {
      p.page = ( Math.min( p.totalPages, p.filteredPages ) - 1 );
      moveToPage(table, p);
    },

    moveToNextPage = function(table, p) {
      p.page++;
      if ( p.page >= ( Math.min( p.totalPages, p.filteredPages ) - 1 ) ) {
        p.page = ( Math.min( p.totalPages, p.filteredPages ) - 1 );
      }
      moveToPage(table, p);
    },

    moveToPrevPage = function(table, p) {
      p.page--;
      if ( p.page <= 0 ) {
        p.page = 0;
      }
      moveToPage(table, p);
    },

    destroyPager = function(table, p){
      showAllRows(table, p);
      p.$container.hide(); // hide pager
      table.config.appender = null; // remove pager appender function
      p.initialized = false;
      delete table.config.rowsCopy;
      $(table).unbind('destroy.pager sortEnd.pager filterEnd.pager enable.pager disable.pager');
      if (ts.storage) {
        ts.storage(table, p.storageKey, '');
      }
    },

    enablePager = function(table, p, triggered){
      var info,
        c = table.config;
      p.$size.add(p.$goto).add(p.$container.find('.ts-startRow, .ts-page'))
        .removeClass(p.cssDisabled)
        .removeAttr('disabled')
        .attr('aria-disabled', 'false');
      p.isDisabled = false;
      p.page = $.data(table, 'pagerLastPage') || p.page || 0;
      p.size = $.data(table, 'pagerLastSize') || parseInt(p.$size.find('option[selected]').val(), 10) || p.size || 10;
      p.$size.val(p.size); // set page size
      p.totalPages = Math.ceil( Math.min( p.totalRows, p.filteredRows ) / p.size );
      // if table id exists, include page display with aria info
      if ( table.id ) {
        info = table.id + '_pager_info';
        p.$container.find(p.cssPageDisplay).attr('id', info);
        c.$table.attr('aria-describedby', info);
      }
      if ( triggered ) {
        c.$table.trigger('updateRows');
        setPageSize(table, p.size, p);
        hideRowsSetup(table, p);
        fixHeight(table, p);
        if (c.debug) {
          ts.log('pager enabled');
        }
      }
    };

    $this.appender = function(table, rows) {
      var c = table.config,
        p = c.pager;
      if ( !p.ajax ) {
        c.rowsCopy = rows;
        p.totalRows = p.countChildRows ? c.$tbodies.eq(0).children('tr').length : rows.length;
        p.size = $.data(table, 'pagerLastSize') || p.size || 10;
        p.totalPages = Math.ceil( p.totalRows / p.size );
        renderTable(table, rows, p);
        // update display here in case all rows are removed
        updatePageDisplay(table, p, false);
      }
    };

    $this.construct = function(settings) {
      return this.each(function() {
        // check if tablesorter has initialized
        if (!(this.config && this.hasInitialized)) { return; }
        var t, ctrls, fxn,
          table = this,
          c = table.config,
          wo = c.widgetOptions,
          p = c.pager = $.extend( true, {}, $.tablesorterPager.defaults, settings ),
          $t = c.$table,
          // added in case the pager is reinitialized after being destroyed.
          pager = p.$container = $(p.container).addClass('tablesorter-pager').show();
        if (c.debug) {
          ts.log('Pager initializing');
        }
        p.oldAjaxSuccess = p.oldAjaxSuccess || p.ajaxObject.success;
        c.appender = $this.appender;
        if (ts.filter && $.inArray('filter', c.widgets) >= 0) {
          // get any default filter settings (data-value attribute) fixes #388
          p.currentFilters = c.$table.data('lastSearch') || ts.filter.setDefaults(table, c, c.widgetOptions) || [];
          // set, but don't apply current filters
          ts.setFilters(table, p.currentFilters, false);
        }
        if (p.savePages && ts.storage) {
          t = ts.storage(table, p.storageKey) || {}; // fixes #387
          p.page = isNaN(t.page) ? p.page : t.page;
          p.size = ( isNaN(t.size) ? p.size : t.size ) || 10;
          $.data(table, 'pagerLastSize', p.size);
        }

        // skipped rows
        p.regexRows = new RegExp('(' + (wo.filter_filteredRow || 'filtered') + '|' + c.selectorRemove.replace(/^(\w+\.)/g,'') + '|' + c.cssChildRow + ')');

        $t
          .unbind('filterStart filterEnd sortEnd disable enable destroy update updateRows updateAll addRows pageSize '.split(' ').join('.pager '))
          .bind('filterStart.pager', function(e, filters) {
            p.currentFilters = filters;
            // don't change page is filters are the same (pager updating, etc)
            if (p.pageReset !== false && (c.lastCombinedFilter || '') !== (filters || []).join('')) {
              p.page = p.pageReset; // fixes #456 & #565
            }
          })
          // update pager after filter widget completes
          .bind('filterEnd.pager sortEnd.pager', function() {
            if (p.initialized) {
              if (c.delayInit && c.rowsCopy && c.rowsCopy.length === 0) {
                // make sure we have a copy of all table rows once the cache has been built
                updateCache(table);
              }
              // update page display first, so we update p.filteredPages
              updatePageDisplay(table, p, false);
              moveToPage(table, p, false);
              fixHeight(table, p);
            }
          })
          .bind('disable.pager', function(e){
            e.stopPropagation();
            showAllRows(table, p);
          })
          .bind('enable.pager', function(e){
            e.stopPropagation();
            enablePager(table, p, true);
          })
          .bind('destroy.pager', function(e){
            e.stopPropagation();
            destroyPager(table, p);
          })
          .bind('update updateRows updateAll addRows '.split(' ').join('.pager '), function(e){
            e.stopPropagation();
            fixHeight(table, p);
            var $rows = c.$tbodies.eq(0).children('tr');
            p.totalRows = $rows.length - ( p.countChildRows ? 0 : $rows.filter('.' + c.cssChildRow).length );
            p.totalPages = Math.ceil( p.totalRows / p.size );
            updatePageDisplay(table, p);
            hideRows(table, p);
          })
          .bind('pageSize.pager', function(e,v){
            e.stopPropagation();
            setPageSize(table, parseInt(v, 10) || 10, p);
            hideRows(table, p);
            updatePageDisplay(table, p, false);
            if (p.$size.length) { p.$size.val(p.size); } // twice?
          })
          .bind('pageSet.pager', function(e,v){
            e.stopPropagation();
            p.page = (parseInt(v, 10) || 1) - 1;
            if (p.$goto.length) { p.$goto.val(p.size); } // twice?
            moveToPage(table, p, true);
            updatePageDisplay(table, p, false);
          });

        // clicked controls
        ctrls = [ p.cssFirst, p.cssPrev, p.cssNext, p.cssLast ];
        fxn = [ moveToFirstPage, moveToPrevPage, moveToNextPage, moveToLastPage ];
        pager.find(ctrls.join(','))
          .attr("tabindex", 0)
          .unbind('click.pager')
          .bind('click.pager', function(e){
            e.stopPropagation();
            var i, $t = $(this), l = ctrls.length;
            if ( !$t.hasClass(p.cssDisabled) ) {
              for (i = 0; i < l; i++) {
                if ($t.is(ctrls[i])) {
                  fxn[i](table, p);
                  break;
                }
              }
            }
          });

        // goto selector
        p.$goto = pager.find(p.cssGoto);
        if ( p.$goto.length ) {
          p.$goto
            .unbind('change')
            .bind('change', function(){
              p.page = $(this).val() - 1;
              moveToPage(table, p, true);
              updatePageDisplay(table, p, false);
            });
        }

        // page size selector
        p.$size = pager.find(p.cssPageSize);
        if ( p.$size.length ) {
          // setting an option as selected appears to cause issues with initial page size
          p.$size.find('option').removeAttr('selected');
          p.$size.unbind('change.pager').bind('change.pager', function() {
            p.$size.val( $(this).val() ); // in case there are more than one pagers
            if ( !$(this).hasClass(p.cssDisabled) ) {
              setPageSize(table, parseInt( $(this).val(), 10 ), p);
              changeHeight(table, p);
            }
            return false;
          });
        }

        // clear initialized flag
        p.initialized = false;
        // before initialization event
        $t.trigger('pagerBeforeInitialized', p);

        enablePager(table, p, false);

        if ( typeof(p.ajaxUrl) === 'string' ) {
          // ajax pager; interact with database
          p.ajax = true;
          //When filtering with ajax, allow only custom filtering function, disable default filtering since it will be done server side.
          c.widgetOptions.filter_serversideFiltering = true;
          c.serverSideSorting = true;
          moveToPage(table, p);
        } else {
          p.ajax = false;
          // Regular pager; all rows stored in memory
          $(this).trigger("appendCache", true);
          hideRowsSetup(table, p);
        }

        changeHeight(table, p);

        // pager initialized
        if (!p.ajax) {
          p.initialized = true;
          $(table).trigger('pagerInitialized', p);
        }
      });
    };

  }() });

  // see #486
  ts.showError = function(table, message){
    $(table).each(function(){
      var $row,
        c = this.config,
        errorRow = c.pager && c.pager.cssErrorRow || c.widgetOptions.pager_css && c.widgetOptions.pager_css.errorRow || 'tablesorter-errorRow';
      if (c) {
        if (typeof message === 'undefined') {
          c.$table.find('thead').find(c.selectorRemove).remove();
        } else {
          $row = ( /tr\>/.test(message) ? $(message) : $('<tr><td colspan="' + c.columns + '">' + message + '</td></tr>') )
            .click(function(){
              $(this).remove();
            })
            // add error row to thead instead of tbody, or clicking on the header will result in a parser error
            .appendTo( c.$table.find('thead:first') )
            .addClass( errorRow + ' ' + c.selectorRemove.replace(/^(\w+\.)/g,'') )
            .attr({
              role : 'alert',
              'aria-live' : 'assertive'
            });
        }
      }
    });
  };

// extend plugin scope
$.fn.extend({
  tablesorterPager: $.tablesorterPager.construct
});

})(jQuery);